Signaling device for vehicles



A. R. S'UHNER & J. D. COAKLEY.

SIGNALING DEVICE FOR VEHICLES.

APPLICATION FILED MAR-19.19%

Patented Aug. 15, 1916.

4 SHEETS-SHEET l.

A. R. SUHNER & J. D. COAKLEY.

SIGNALING DEVICE FO R vsmcus.

vAPPLICATION FILED MAR. 19, 19l5. p

Patented Aug. 10, 1916 W/TIVESSES:

.... .Q N \Q .mw NM L NR \w A TTOR/VEV A. R. SUHNER & I. D. COAKLEY.

SIGNALING DEVICE FOR VEHICLES.

Patented Aug. 15, 1916.

4 $HEETSSHEET 3.

APPLICATION FILED MAR-19,19l5- I A. R. SUHNER 51]. D. COAKLEY.

SIGNALING DEVICE FOR VEHICLES.

-APPL|CATION FILED MAR. 19. 1915.

1 1 9&39 Patented Aug. 15, 1916.

4 SHEETS-SHEET 4.

WITNESSES.

A TTOR/VEY eerie.

ALBERT EblTJ'HlYl'ER AND JOSEPH D. COAKLEY, OF NEW YGRK, H f.

SIGNALING DEVICE FOR. VEHICLES.

earse.

Speciflcatiers ma. P t t u 5, new

Application filed March 19, 1915. Serial Ito. 15,565.

borough of Bronx, county of Bronx, and

State of New York, have invented a .certain new and useful Improvement in Signaling Devices for Vehicles, of which the following is a full, clear, and exact specification.

This invention relates to a class of devices adaptedto be used in conjunction with vehicles. I

Our invention has for its object primarily to providea signaling device designed to be applied to automobiles and other vehicles, and especially on the back thereof, whereby a signal may be displayed when the vehicle is turning a corner to the rightor to the left as well as when the vehicle is at a standstill to give warning at night and during the day of the impending danger particularly to other vehicles which may be approaching from the rear thereof. This is accomplished mainly by applying on the back of the veh i cle preferably two'of the devices, one at the right and one at the left of its body so that the direction in which the vehicle is about to turn may be unmistakably'indicated. The

of the casing to alternately invention consists essentially of a casing having an open end, and this casing is mounted on the back of the vehicle. In the casing, and slidably adjustable inwardly and outwardly of its open end is a signal preferably in the form of a colored hollow transparency, or signal in which is mounted an electric lamp. Also in the casing is provided an electric motor adapted to'be driven for causing the signal to be moved exteriorly and interiorly display and obi scure the signal from view.

Other objects of the invention provide a normally open electric circuit adaptedto be closed for driving the motor; to prowide in the casing transmitting mechanism .the signal so as to be displayed at intervals;

which is operated by the motor for adjusting to provide a controller which is operable by the mechanism for opening the circuit to stop the operation of the motor and the mechanism when the signal has been adjustedxto give a danger warning and for subsequently opening the circuit to stop the motor and the mechanism when the signal has been reversely moved to obscure itfrom view; to provide a normally open sub-circuit adapted to be closed for lighting the lamp in the ho1- larlydescribed with reference to the accompanying drawings forming a part of this specification in which similar characters of reference indicate corresponding parts in all theviews, and will then be pointed out in the claims at the end of the description.

- In the drawings, Figure 1 is a rear view of a vehicle-showing the manner of using two of thesignaling devices'in conjunction therewlth. Fig. 2 is a view partly in section and partly in detail, taken longitudinally through the device. 'g. 3 is a. view, partly in section and partly indetail, taken through the device showing parts thereof when the signal transparency is obscuredfrom view. Fig. 4c is a sectional View, partly in detail and partly fragmentary, taken through the device, and which'shows the transparency displayed to signal a warning as well as shownism used in conjunction therewith. Fig. 6

is aninvcrted view, partly broken away, of the signal transparency and its slidable supporting plate. Fig. 7 is a section taken on the line VII- vil of Fig. 2. Fig. 8 is an enlarged top plan of the controller for open ingthe circuit at intervals to stop the operation of the motor and the transmitting mechanism, and which shows the position of the parts thereof when the circuit is open after the displayingof the signal. Fig. 9 is an enlarged top plan of the controller showing the position of its parts when the circuitis open following the obscuring of the signal.

Fig. 10' is an end view of the parts of the device shown in Fig. 8 looking in the direction of the arrow. Fig. 11 is an enlarged diagrammatic view showing the relative arrangement of the electric circuits and associate parts used for operating the device. Fig. 12 is a reduced inverted view of the supporting plate of the controller showing part of the arrangement of the electric wires leading thereto. Fig. 13 is an inverted View of part of the base plate of the casing showing part of thearrangement of the electric wires and the switch for opening and, closing the circuit to the electric lamps of the signal I 'to the base plate 11 of the casing is a coveropposite to the rear section 12 of the base transparency. Fig. 14 is an enlarged top plan of the push-button switches employed for closing the circuit to operate the device, and Fig. 15 is an enlarged fragmentary view of the top of the steering wheel of an automobile showing the manner of employing the push-button switches in conjunction therewith.

The signaling device has a casing 10 provided with a metallic base plate l1 formed with a rear section 12 and a slightly elevated front section 13, the rear section having extending marginal flanges, as 14 and 15, to permit the device to Ice-fastened on when turning'for instance a corner.

in a lateral direction from the right of the side of the vehicle and on the transparent plate 28 of this device may be inscribed the letter R, as at 30, to indicate that the vehicle is about to be steered to the right 10 second device is applied on the left of the body of the vehicle so that its signal will be displayed in a lateral direction from the left side thereof, and on the transparent plate 28 of this device maybe inscribed the letter L, as at 31, to indicate that the vehicle is about to be steered to the left when turning a corner.

The electric lamp 29 may be of any suitthe rear end of an automobile, or other able type, and the metal socket of this lamp vehicle, as 16 Fig. 1. Removably attached is removably mounted in a metal apertured bracket, as 32, provided in the rear end of ing 17 extending some distance above the the transparent signal 26. Projecting base plate, and the end of this covering through the aperture of this bracket is a threaded metal rod 33 which engages one plate is open, at 18. The casing 10 is prefof the contacts of the lamp. The metal rod erably substantially rectangular in shape 33 is insulated from the bracket and the and may be of any desired length and width. frame of the transparent signal. The sig- Longitudinally of the casing 10 and elevated nal 26 isheld on the end of the slide 25 above the base plate 11 interiorly of the Which is opposed to the open end 18 of the casing is an approximately rectangular supcasing 10 by means of the bracket 32, the porting plate 19 held stationary by being lower end of which is connected to the slide fastened to two spaced spanning brackets in a manner to be freely movable in the slot 20 and 21 secured tothe base plate and to 22 of the stationary supporting plate 19 the supporting plate. The supporting plate for permitting the signal to be accurately 19 is of a length so that one of its ends guided alternately outwardly and inwardly extends in proximity to the open end 18 f of the casing of the device. The slide 25 c the casing, and in this end of the supporting is o a length so that its other end will be v transparency, or signal 26.

plate is a guide slot 22 extending lengthnearly alined with the rear end of the stawise of the plate to approximately its ceny pp ting p ate 19 hen the signal tral part. ,Both of th longitudi al d 26 is in its normal position inside of the of the supporting plate 19 are turned downasing 10, and projecting downwardly from wardly and inwardly in spaced relation to pp Parts Of the underside f this end the underside'of thi l t t id t portion of the slide are two pins 35 and 36. grooves, as 23 and 24, and in these groovesfh y held y a fing r n t on the is slidably disposed the slide 25 of-a hollow threaded metal rod 33 is ne en of an angular arm, as 37, projecting to one side The hollow transparent signal 26 has a of the Signal and n the other end of cylindrical metal frame 27 hich i pr f. this arm is a metallic shoe, as 38, adapted to erably elliptic, as viewed transversely, and he moved when the Signal is p y d into this frame is of a size whereby it maybe engagement with a Contact 39 Q Spring freely directed inwardly nd out dly f metal. The contact 39 is secured to an inthe open end. 18 f th Casing 10 f th sulated plate 40 extending laterally from device. Through the wall of the frame 27 the Outer end of the Stationary Supporting of the signal is an opening in which is held Phite v a'plate 28 of glass, or other transparent ma- Wi hin h g of the device and Supte'rial. The frame and the transparent plate Ported 0n the r l i n 12 of the base of the signal are preferably colored entirely Plate 11 iS a motor 41 f any esired make in red so as to bev easily observed during adapted to be operated by an electric he day While at night the light from n cuit, as 42, leading from any suitable source electric lamp, as 29-, which is mounted therepp1y, or instance from a battery, as

1n, will be displayed in red through the 43, which is preferably arranged in the vetransparent plate 28, thereby serving as an hicle. Serving to transmit the signal 26 ineffective danger warning when displayed. wardlyand outwardly of the casing 10 for As shown in, Fig. 1, in practice twoof being alternately displayed and obscured the signaling devices are preferably emfrom view when the motor is driven, a mechployed onaveh1cle. One of the devices is anism, as 44, is provided. The mechanism applied on the right of the body of the 44 is composed of a pinion 45, Fig. 5, held vehicle so that the signal will be displayed .on the shaft 46 of the motor 41, and meshing with this pinion isa second mien- 47? which is rotatable on a ,short sha 48 pro In meshwith the pinion'47 isle-large gear disposed s aft 50 journaled'ina bearing also provided on the top surface of the base-plate 11, and on this shaft above the large gearis held a sprocket wheel 51. Spaced from the. sprocket wheel 51, and approximately midway of the base plate is an upwardly projecting bearing in which is journaled a second vertically disposed shaft 52 having held thereon a second sprocket wheel 53' of the same diameter as thesprocket wheel 51. Over the sprocket wheels 51 and 53 is guided a sprocket chain, or belt 54, and

projecting downwardly from the underside of this chain is a pin 55, Figs. 2, 8, 9. Projecting laterally from the outer edge of the sprocket chain 54, and at a spaced interval from the pin 55', is ashoe, or catch 56 of spring metal so as to be somewhat yielding. The yielding catch 56 is adapted to first engage one of the pins 35 and 36 of the slide 25 of the signal 26 to move the slide so that the signal will be guided outwardly of the casing 10 for displaying a danger warning, and the catch will afterward engage the second pin of the slide to move it together with the signal inwardly of the casing for obscuring the signal when the sprocket chain. 54 is driven by the sprocket wheels 51 and 53 which are rotated by the large gear 49 and the pinion 47 when the pinion 45 is revolved by operation of the motor 41, as will be hereinafter more fully explained.

The electric circuit 42 which operates the motor 41 consists of a wire 57 leading from one pole of the battery 43 to a binding post 58 on the base plate 11,- and this binding post is insulated, at 59, from the base plate. Connected to the binding post 58 is a-wire 60 leading to one terminal of the motor 41,

and leading from the second terminal of the motor is a loose wire 61 which passes under the base plate 11 and through a hole therein to the top of this plate. The other end of the loose wire 61 is attached to the free end ofa switch, as 63, which is pivotally connected, at 64, to an elevated sup-' porting plate 65 secured on the base plate .11 so as to be disposed between the sprocket wheels 51, 53, and directly under the sprocket chain 54. The switch 63 is adapted to be alternately swung in engagement with two spaced contacts 66 and 67 which extend through openings in an insulating plate 68 arranged on the central part of the elevated supporting plate 65. Connected to the contact 66 is one end of a wire 69 lead ing to a binding post 70 on the metallic base plate 11, and this post is insulated, at 71, from the plate. From the second contact lit 6711s a wire 72' lbading-to another binding P 73 also oni-themetallic base. late .11, ectmg upwardly from the vbase plate-$ 11.;

and this postisinsulated, at '74,. rom the p plate. From the second. pole of the bat- 49 held upon the lower part eta-vertically" tery 43'. is a wire 75. which leads to a binding post 76 on the metallic base plate, and

this binding post is free of insulation with to and through another binding post 77 on the metallic base plate, this-second binding post also being free of insulation with the metallic basev plate 11. the insulated binding post 70 is one end of a wire 7 8 having its other end connected to a switch, as 79, and from this switch is a wile 80 leading to a second switch 81. One end of awire 82 is connected to the switch 81, and the other end of this wire is connected to the insulated binding post 73. Connected to the grounded binding post 77 is a wire 83 leading to the wire 80 connecting the switches 79 and 81 The switches 79 and 81 are preferably in the forms of well known push-button types, and these switches are arranged in pairs on the hand wheel 84 of thp steering column of the vehicle. When two of the signaling devices are em- Connected to ployed on a vehicle the pairs of push-but-- ton switches are arranged on opposite parts of the hand wheel. so as to be convenient for operation by the chaufleur, and one or more of these push-buttons may be indicated in suitable colors, for instance one of each pair may be in red while the other is in white, the red button bein pushed for closing the circuit to display the signal'and the white button being pushed to close the circuit for reversely moving the signal to obscure it.

When the red button is pushed to operate the switch 79 to display the signal 26 to give a warning the circuit willbe closed from one pole of the battery 43, over the Wire 57, through the binding post 58, over the wire 60 to one terminalof the motor 41, and the current will be transmitted from the second pole of the battery over the wire 75 to and through the binding post 76, through the has plate 11, to and through the binding post 77, over the wires 83 and 80,,through the switch 79, over the wire 78, through a the binding post 70, over the wire 69, through the switch 63 and the contact 66, and over the wire 69 to the second terminal of the motor 41 which will then be energized. The operation of the motor 41 and its shaft 46 will impart rotation to the pinions' 45 and 47, to'the gear 48, shaft 50, and the sprocket wheels 51 and 53 through the driving of the sprocket chain 54. When the signal 26 is obscured from view by being within the casing 10 the rear end of the slide 25 will be adjacent to the rear end of the supporting plate 19, and the pins 35 and 36 will then be positioned, as shown in Figs.

2, 5, 6. The spring shoe 56 of the sprocket chain 54 will'be in contact withthe pm 35 of the, slide, as indicated in Fig. 5, and, as the chain 54 is d'riventhe shoe 56. will yield so nism 44 in order to permit the signal to be displayed the required length of time, a controller, as 84, is provided on' the elevated supporting plate65. The controller 84 consists of the switch'63 which has a laterally extending arm 85 adapted to alternately engage the contacts 66 and 67 when the switch is accordingly swung on its pivot 64'. Also projecting from an end of the switch at'a right angle to its arm 84 is a finger 86 which is substantially semi-elliptic in shape, and this finger is movably disposed in a similar shaped recess 87 in.one end of a lever, as 88,

- having itscentral part pivoted, a: 89, tothe plate 65. The other end of the lever 88 is 80 pivoted, at 90, to one end of a link or bar 91 which extends under a guide plate 92 secured to the supporting plate 65 so that part thereof is spaced above the supporting plate,

and this link is of a length to extend in proximity to the rear end of the supporting plate 65; The other end of the link 91 is pivoted, at 93, to the central part of an actuating lever 94 having one of its ends pivoted,

at 95, to the supporting plate,and -project-.

ing from the other end of this leveris a finger 96 disposed in the path of movement of the pin 55 projecting downwardly from the'underside of the sprocket chain 54. The end of the switch 63 opposite to its finger 86 is pivoted, at 97, to one end of a link, or bar 98 disposed under a' guide plate 99 which is,

similar to the guide plate 92, and this guide plate 99 is rigidly held on the supporting plate 65. The link 98 is of a length to extend inproximity to the front end of the supporting plate 65, and the second end of this link is pivoted, at 100, to the central part of a second actuating lever 101. One

end of the lever 101 is pivoted, at 102, to the supporting plate 65, and projecting from the opposite end of this lever is a finger 103 which is also disposed in the path of movement of the pin 55 of the sprocket chain 54.

vWith the closing of the circuit to display the signal 26, as above described, and when the signal is guided exteriorly of the casing 10, the pin 55 of the sprocket chain 54 is arranged so as to engage the finger 96 of the actuating lever 94, as shown in Fig. 8. This lever will thereby be swung on its pivot toward the rear end of the. supportmg plate 65, we the link t1 will be likewise directed. The; recessed end of the lever 88 will be guided 1n an opposite direction, swinging the switch 63 so that its arm. will move from engagement with the contact 66 into engagement with the contact 67 of the insulating plate 68. The circuit will then be opened to stop the operation of the motor 41 and the mechanism 44 so that the signal 26 will remain exposed for the required length-of time. .When'it is desired to reverse'ly move the,signal so as to be obscured 'from .view within the casing 10, the white button of'the-switch 81 is pushed. The'circuit will then be closed from one pole of the battery 43, over the wire 57, through the binding post 58, over the wire 60 to one terminal of the motor 41, through the motor to itssecond terminal, over the wire 61, through the switch 63, and the contact 67, over the wire 72, through the binding post 73, over the wire 82 to the switch 81,

and the current will be transmitted from.

the second pole -of the battery 43, over the wire 75, through the binding post 76 through the supporting plate 11, to an through the binding post 77, over the wire 83, and over the wire 80 to the switch 81.

' The niotor 41 will thereby be energized to operate the mechanism 44, as hereinbefore explained, and during the driving of the.

sprocket chain54 its shoe 56 will engage the pin 36 of the slide 25 of the signal. The ,slide 25 willthen be guided re'arwardly on the plate 19 and the signal will also be moved interiorly of the casing 10. During the movement of the sprocket chain 54 its pin 55 will pass the lever 94 of the controller 84 and afterward engage the finger 103 of the lever 101 which in turn. will be swung toward the front edge of the supporting plate 65, as shown in Fig. 8. The link-.98 will likewise be directed, and the switch 63 will be swung on its pivot for the arm 85 to be moved from the contact 67 into engagement with the contact 66. In this manner the circuit will be opened to stop the operation of the motor 41 and the mechanism 44 for re taining the signal within the casing 10 until the device is again operated to display the signal to give a danger warning.

In order to permit the'electric lamp 29 in the hollow transparent signal 26 'to be lighted especially at night, a sub-circuit 104 is provided. The opening and closing of this sub-circuit is controlled by a switch 105 which is pivoted to an insulating plate 106 on the base plate 11 of the casing 10, and this switch is adapted to be alternately swung into engagement with two spaced contacts 107 and 108 also provided on this insulated plate. Connected to the contact 107 is one end of a wire 109 leading to the binding post 58 and to the switch 105 is the spring contact 39 arranged on the supporting plate 19 in the path of movement of the metal shoe 38 of thebracket 37 adjustably fastened on the rod 33 leadin to the electric lamp 29 of the signal 26. The switch 105 has a vertically dis osed arm extending upwardly through a s l ot 111 in the base plate ll of the casin 10 so as to be conveniently manipulated for cutting-in and cutting-out this sub-circuit 104. During the day this sub-circuit is preferably cut-out of the regular circuit 42 by moving the switch from the contact 107 to the contact 108, and when the sub-circuit is cut-in this switch is reversely swung into engagement with the contact 107 for permitting the electric lamp to be lighted simultaneously with the displaying of the signal 26. When the device is operated to signal a danger warning, as above explained the metal shoe 38' will be caused to engage the sprin contact 39, and the circuit will be closed rom one pole of the battery 43, over the wire 57, through the binding post 58, over the Wire 109 to contact 107, through the switch 105, over the wire 110, through the contact 39, through the shoe 38, bracket 37, rod 33, and through the lamp 29. The current will also be transmitted from the second pole of the battery 43, over the wire 75, through the base plate 11, through the metallic frame 27 of the signal 26 to the lamp 29,.and when the signal is reversely transmitted, as above described, the shoe 38 will be released from its engagement with the contact 39, and the sub-circuit will be broken to extinguish the lamp 29. Thus the employment of our signaling device on a vehicle will serve to effectually give warning at night and during the day of impending danger particularly to other vehicles which may be approaching from the rear thereof.

In'the foregoing description, we have embodied the preferred form of our invention, but we do not wish to be understood as limiting ourselves thereto, as we are aware that modifications may be made therein without departing from the principle, or sacrificing any of the advantages of this invention, therefore we reserve to ourselves the right to make such changes as fairly fall within the scope of the appended claims.

Having thus described our inventlon, we

claim as new and desire to secure by Letters Patent 1. In a signaling device for vehicles, a casing adapted to'be applied on the vehicle, a signal movably disposed in the casing so as to be guided exteriorly thereof to give a danger warning and then guided interiorly of the casing for being obscured from View, a motor in the casing, a normally open circuit leading to the motor, manually operative means for closing the circuit to drive the motor, mechanism in the casing,

means in the casing operable operable by the driving of the motor to alternately guide the signal exteriorly and interiorly of the casing, and a controller i the casing, operable by the operation of the mechanism to open the circuit for stopping the motor when the signal has been moved outward of the casing and also when the signal has been moved inward thereof.

2. In a signaling device for vehicles, a casing adapted to be applied on the vehicle, a signal movably disposed in the casing so as to be guided exteriorly thereof to give a danger warning and then guided interiorly of the casing for being obscured from view, a motor in the casing, a normally open electric circuit leadin to the motor, manually operative means fin closing the circuit to drive the motor, gearing in the casing operable by the driving of the motor to alternately guide the signal exteriorly and interiorly of the casing, and a controller in the casing, operable by the operation of the gearing to open the circuit for stopping the motor when the signal has been moved outward of the casing and also when the signal has been moved inward thereof.

3. In a signaling device for vehicles, a casing adapted tobe applied on the vehicle, an electric lamp movably disposed in the casing so as to be guided exteriorly thereof to give a danger warning and then guided interiorly of the casing for being obscured from view, a motor in the casing, a normally open electric circuit leading to the motor, by the driving of the motor to alternately guide the lamp exteriorly and interiorly of the casing, and to open the circuit for stopping the motor when the lamp has been moved outward of the casing and also when the lamp has been moved inward thereof, a normally open electric sub-circuit leading to the lamp, and means connected to the lamp for closing the sub-circuit to light, the lamp when exposed exteriorly of the casing.

1. In a signaling device for vehicles, a casing adapted to be applied on the vehicle, a hollow transparent signal colored so as to be easily seen during the day, and movably disposed in the casing for being guided exteriorly thereof to give a danger warning and then guided interiorly of the casing for being obscured fromview, an electric lamp in the signal, a normally open circuit, mechanism in the casing, operable by the closing of the circuit to guide the signal exteriorly of the casing, and to open the circuit for stopping the signal when the signal has been moved outward of the casing and also when the signal has been moved inward thereof, a normally open electric sub-circuit leading to the lamp, and means connected to the lamp for closing the sub-circuit to light the lamp when the signal is exposed to view.

5. In a signaling device for vehicles, a casing adapted to be applied on the vehicle, a slide movably disposed in the casing, a

signal on the. slide for being guided exteriorly of the casing to give a danger warning and then guided interiorly of the casing for being obscured from view, a motor in the casing, a normally open circuit leadand also when the signal has been moved inward thereof.

6. In a signaling device for vehicles, a casing adapted to be applied on the vehicle, a signal in the casing for being guided'exteriorly thereof to give a danger warning and then guided interiorly of the casing for being obscured from view, a motor in the casing, a normally open electric circuit leading fromthe battery to the motor, manually operative means for closing the circuit to drive the motor, gearing in the casing, operable by the driving of the motor, a belt in the casing driven by the gearing to alternately guide the signal exteriorly and interiorly of v the casing, means in the casing, operable by the driving of the belt to open the circuit for stopping the motor when the signal has been moved outward of the casing and also when the signal has been moved inward thereof,

a. normally open electric sub-circuit leading tothe signal, and meansconnected to the signal for closing the sub-circuit when the: signal is disposed exteriorly of-the casing for the purpose specified.

7. In aj signaling device for vehicles, a casing adapted to be applied on the vehicle, 1 a signal movably dis osed in the casingso as to be guided ,exterlorly thereof to give a 1 danger warning andthen guided interiorly of the casing for being obscured from view, a motor in the casing, a normally open electric circuit, manually operative means for closing the circuit to drive the motor, a belt in the casing, adapted to be driven by the driving of the motor, means on the belt for intermittently engaging the signal to alternately guide the signal exteriorly and interiorly of the casing and a lever operative mechanism in the casing, including a switch in the circuit, operable by the belt to open the circuit. forstopping the motor when the signal has been moved outward of the easing and also when the signal has been moved inward thereof. a

8. In a signaling device for vehicles a casijngadapted to be applied on the vehicle,

a hollow transparent signal colored so as to be easily seen during the day, and adapted to be electrically lighted for being seen at night, said signal belng movably disposed in the casing so as to be guided exteriorly thereof to give danger warning and then guided interiorly of the casing for being obscured from view, power driven mechanism in the casing, a normally open electric circuit leading to the mechanism, a belt inthe casing, adapted to be driven by the mechanism, means on the belt for intermittently engaging the signal to alternately ide the signal exteriorly and interiorly o the casing, a lever operative mechanism in'the casing including a switch in the circuit, operable by the belt to open the circuit for stepping the signal when moved outward of t e casing and also when the signal has been moved inward thereof, a normally open electric sub-circuit leading to the'signal, and means for closing the sub-circuit to light the signal when exposed to view.

This specification signed and witnessed this eighteenth day of March, A. D. 1915.

ALBERT R. SUHNER. I 'JOSEPH D. COAKLEY.

Witnesses; i KROBTJB. ABBo'r'r,

DERMODY. 

